Independent variable

β

SE

χ²

P

OR (95% CI)

Gender (reference group = female)

Male

0.09

0.06

2.237

0.14

1.094 (0.972 - 1.231)

Subject Classification (reference group = natural science)

Humanities and social sciences

0.234

0.062

14.434

<0.001

1.264 (1.120 - 1.426)

Birthplace (reference group = town)

Non-town

0.133

0.066

4.023

0.05

1.142 (1.003 - 1.300)

Family situation (reference group = sound)

Non-sound

0.393

0.09

18.884

<0.001

1.481 (1.241 - 1.769)

Economic status (reference group = non-poverty)

poverty

0.098

0.062

2.482

0.12

1.102 (0.976 - 1.245)

Educational level (reference group = master’s degree and doctorial degree)

Bachelor degree

1.018

0.196

27.067

<0.001

2.769 (1.980 - 5.035)

Associate degree

1.15

0.238

23.33

<0.001

3.158 (2.012 - 5.356)